# From Python
# It requires OpenCV installed for Python
import sys
import cv2
import os
from sys import platform
import argparse
import time

try:
    # Import Openpose (Windows/Ubuntu/OSX)
    # 获取当前脚本文件的目录路径
    dir_path = os.path.dirname(os.path.realpath(__file__))
    try:
        # 检查操作系统类型
        # Windows Import
        # 对于Windows系统
        if platform == "win32":

            # 修改这些变量以指向正确的文件夹（如Release/x64等）
            # 使用 os.path.join 来避免路径分隔符的问题
            openpose_path = os.path.join(dir_path, '../../python/openpose/Release')
            sys.path.append(openpose_path)
            #sys.path.append(dir_path + '/../../python/openpose/Release');
            #os.environ['PATH']  = os.environ['PATH'] + ';' + dir_path + '/../../x64/Release;' +  dir_path + '/../../bin;'
            # 设置环境变量PATH，以便可以在命令行中调用OpenPose的可执行文件
            # 在Python脚本中通常不需要这样做，这样可以在脚本中调用OpenPose的可执行文件
            # 使用 os.pathsep 来确保路径分隔符的正确性
            os.environ['PATH'] = os.environ['PATH'] + os.pathsep + os.path.join(dir_path,'../../x64/Release') \
                                 + os.pathsep + os.path.join(dir_path, '../../bin')
            # 导入OpenPose的Python接口
            import pyopenpose as op
        else:
            # 对于Linux或MacOS系统
            # 修改这些变量以指向正确的文件夹（如Release/x64等）
            # 这里假设OpenPose的Python库位于相对于脚本的固定路径下
            sys.path.append('../../python')
            # If you run `make install` (default path is `/usr/local/python` for Ubuntu), you can also access the OpenPose/python module from there. This will install OpenPose and the python library at your desired installation path. Ensure that this is in your python path in order to use it.
            # sys.path.append('/usr/local/python')
            # 如果运行了 `make install`（对于Ubuntu，默认路径是 `/usr/local/python`），则也可以从那里访问OpenPose/python模块
            # 注意：通常不需要这样做，除非OpenPose的Python库确实被安装到了非标准路径
            # 并且，下面的代码行已经被注释掉了，因为它可能会覆盖掉其他重要的Python库路径
            # sys.path.append('/usr/local/python')
            # 从openpose模块导入pyopenpose
            from openpose import pyopenpose as op
    except ImportError as e:
        # 如果在尝试导入pyopenpose时发生错误，则打印错误消息并重新抛出异常
        print('Error: OpenPose library could not be found. Did you enable `BUILD_PYTHON` in CMake and have this Python script in the right folder?')

        # 打印原始异常信息
        print(e)
        # 重新抛出异常，以便调用者可以处理它
        raise e


    # Flags
    parser = argparse.ArgumentParser()
    parser.add_argument("--image_dir", default="../../../examples/media/", help="Process a directory of images. Read all standard formats (jpg, png, bmp, etc.).")
    parser.add_argument("--no_display", default=False, help="Enable to disable the visual display.")
    args = parser.parse_known_args()

    # Custom Params (refer to include/openpose/flags.hpp for more parameters)
    params = dict()
    params["model_folder"] = "../../../models/"

    # Add others in path?
    for i in range(0, len(args[1])):
        curr_item = args[1][i]
        if i != len(args[1])-1: next_item = args[1][i+1]
        else: next_item = "1"
        if "--" in curr_item and "--" in next_item:
            key = curr_item.replace('-','')
            if key not in params:  params[key] = "1"
        elif "--" in curr_item and "--" not in next_item:
            key = curr_item.replace('-','')
            if key not in params: params[key] = next_item

    # Construct it from system arguments
    # op.init_argv(args[1])
    # oppython = op.OpenposePython()

    # Starting OpenPose
    opWrapper = op.WrapperPython()
    opWrapper.configure(params)
    opWrapper.start()

    # 读取目录中的图片
    imagePaths = op.get_images_on_directory(args[0].image_dir)
    start = time.time()

    # 处理并显示图片
    for imagePath in imagePaths:
        datum = op.Datum()
        imageToProcess = cv2.imread(imagePath)
        datum.cvInputData = imageToProcess
        opWrapper.emplaceAndPop(op.VectorDatum([datum]))

        print("Body keypoints: \n" + str(datum.poseKeypoints))

        if not args[0].no_display:
            cv2.imshow("OpenPose 1.7.0 - Tutorial Python API", datum.cvOutputData)
            key = cv2.waitKey(15)
            if key == 27: break

    end = time.time()
    print("OpenPose demo successfully finished. Total time: " + str(end - start) + " seconds")
except Exception as e:
    print(e)
    sys.exit(-1)